Volume 65, 1978

Effect of molecular architecture of long chain fatty acids on the dispersion properties of titanium dioxide in non-aqueous liquids

Abstract

The effect of varying chain length and chain branching on the adsorbed layer thickness of oligoesters on titania in non-aqueous solvents has been studied and related to the degree of flocculation of the dispersions using viscometry.

The oligoesters were a series of monodisperse condensates of 12-hydroxystearic acid, up to the pentamer. Also, a series of branched esters in which the degree of branching was varied systematically was studied. The latter consisted of the valeric esters of mono-, di- and tri-hydroxystearic acid.

It was found that the thickness of the adsorbed layer was not necessarily the criterion for good dispersion stability, but a complex function of surface concentration. This was dependent on main chain length, the size, position and number of branches and the solvency of the medium.

Article information

Article type
Paper

Faraday Discuss. Chem. Soc., 1978,65, 252-263

Effect of molecular architecture of long chain fatty acids on the dispersion properties of titanium dioxide in non-aqueous liquids

A. Doroszkowski and R. Lambourne, Faraday Discuss. Chem. Soc., 1978, 65, 252 DOI: 10.1039/DC9786500252

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